| Patents for B29C 44 - Shaping by internal pressure generated in the material, e.g. swelling, foaming (19,824) |
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| 09/08/1981 | US4288564 Polyurethanes; adosrbing nitrogen to accelerate blowing process |
| 09/02/1981 | EP0034582A1 Method for injection moulding foamed resin parts with a smooth finish |
| 09/01/1981 | US4287143 Cloth molding process |
| 09/01/1981 | CA1108350A1 Expanded particulate material of polyolefin resin |
| 08/27/1981 | EP0034582A4 Method for injection moulding foamed resin parts with a smooth finish. |
| 08/25/1981 | US4286001 Process for the production of industrial parts of synthetic material comprising a rigid portion surmounted by a flexible portion and the industrial part produced by said process |
| 08/25/1981 | US4285902 Method of molding a re-enforced article |
| 08/25/1981 | US4285893 By application of a vacuum |
| 08/18/1981 | US4284683 Structural laminate |
| 08/18/1981 | US4284673 Method of manufacturing a panel, provided with a frame foamed of synthetic material at least at one lateral face thereof, as well as a panel obtained through the method |
| 08/18/1981 | US4284596 Epoxy compound, metal compound |
| 08/18/1981 | US4284447 Heat expansion of plastic, adhering reinforcing strips |
| 08/05/1981 | EP0033116A2 Method and apparatus for foaming in situ of soft-foam plastic sheets with hard foam plastics |
| 07/29/1981 | EP0032743A1 A process for manufacturing synthetic foam seats or cushions presenting an integrated cover and an incorporated prefabricated frame, and installation for carrying out this process |
| 07/29/1981 | EP0032696A1 Method and apparatus for automatically controlling the rate of mass flow |
| 07/29/1981 | EP0032624A1 Apparatus and method for the continuous manufacture of foam board |
| 07/29/1981 | EP0032582A2 Expanded shaped articles of a heat resistant synthetic resin |
| 07/28/1981 | US4280640 Integral double-wall container |
| 07/21/1981 | US4279848 Process for extruding an open-cell foamed polyolefin filter |
| 07/21/1981 | US4279847 Expanding granules |
| 07/21/1981 | CA1105219A1 Injection foam molding process |
| 07/15/1981 | EP0032052A1 Method for producing panels |
| 07/14/1981 | US4278628 Method for pre-expanding and molding expandable thermoplastic polymer particles |
| 07/14/1981 | US4278625 Field transplant systems and methods and components thereof |
| 07/14/1981 | US4278624 Fluid film continuous processing method and apparatus |
| 07/14/1981 | US4278482 Foaming, gagueing |
| 07/14/1981 | US4278045 Dispensing foamable material |
| 07/14/1981 | CA1104916A1 Method for applying a backing material to a thermoplastic blank |
| 07/09/1981 | WO1981001815A1 Foam sandwich construction |
| 07/08/1981 | EP0031569A1 Production of insulated winding wires that can de directly tinned |
| 07/08/1981 | EP0031425A2 Method of preparing agglomerated foams |
| 06/30/1981 | US4276245 Glass fiber reinforced resin, ribs, roaming hardenable resin |
| 06/30/1981 | US4276008 Apparatus for molding expandable thermoplastic polymer particles |
| 06/30/1981 | US4275683 Apparatus for applying foam to a moving web |
| 06/30/1981 | US4275539 Method and apparatus for insulating building blocks and the blocks produced thereby |
| 06/30/1981 | CA1104300A1 Masterbatch pellets |
| 06/30/1981 | CA1103874A1 Processes and production apparatus for rigid cellular materials comprising polyvinyl chloride |
| 06/30/1981 | CA1103873A1 Method and apparatus for processing foamable thermoplastic mixtures |
| 06/30/1981 | CA1103872A1 Method and apparatus for forming thermoplastic foams |
| 06/30/1981 | CA1103871A2 Colour-coded cellular insulation |
| 06/24/1981 | EP0030936A2 A method for producing a shaped article comprising two closely-spaced substantially parallel walls enclosing a volume therebetween which is filled with foam |
| 06/23/1981 | US4275024 Process and apparatus for elimination of densified areas in blocks of pliable polyurethane foam |
| 06/23/1981 | US4275023 Prefoamed particles are impregnated with a pressurized gas then compression molding |
| 06/23/1981 | US4274822 Apparatus for forming seal liners of thermoplastic material within closure cap shells |
| 06/23/1981 | US4274818 Apparatus for pre-expanding and molding thermoplastic polymer particles |
| 06/23/1981 | CA1103444A2 Method and apparatus for applying foam insulation to pipe |
| 06/17/1981 | EP0030522A2 A self supporting panel of polyurethane resins or the like, a manufacturing method thereof and an apparatus used therewith |
| 06/17/1981 | EP0030333A1 Alkyldiphenyl-ether sulfonic acid hydrazides, their production and use as blowing agents |
| 06/16/1981 | US4273738 Method and apparatus for forming, and trimming, three-dimensional work pieces |
| 06/16/1981 | US4273737 Method and apparatus for manufacturing furniture |
| 06/16/1981 | CA1102985A1 Method of and apparatus for the injection-molding and cooling of shaped synthetic-resin bodies |
| 06/10/1981 | EP0030206A1 Method and apparatus for molding a tire |
| 06/10/1981 | EP0029874A2 Process for the continuous manufacture of heat-insulated conduits, and device for carrying out the process |
| 06/09/1981 | US4272469 Method and apparatus for forming expanded foam articles |
| 06/09/1981 | US4272468 Method for reducing the aging period of polyethylene foams |
| 06/03/1981 | EP0029608A1 Process for producing deep-drawn articles from plastic sheet material, foamed-up with a foam material |
| 06/02/1981 | US4271108 Method and apparatus for the discontinuous production of a foamed block |
| 06/02/1981 | US4271107 Inclined barometric leg type |
| 06/02/1981 | US4270889 Equipment for the continuous production of foam boards |
| 06/02/1981 | CA1102069A1 Applicator device for flowable reaction masses |
| 06/02/1981 | CA1102066A1 Method and apparatus for molding expanded plastic material articles |
| 06/02/1981 | CA1102065A1 Flexible sheet material |
| 06/02/1981 | CA1102064A1 Type cork line and a process and apparatus for producing same |
| 05/26/1981 | US4269890 Process and apparatus for introducing foam into automobile body cavities |
| 05/26/1981 | US4269889 A foamed polyether- or polyesterurethane copolymer combined with a large-denier crimped polyester fiber formed by twisting and wet heat-setting; resilience; aging resistance |
| 05/26/1981 | CA1101778A1 Method and apparatus for forming and trimming three- dimensional work pieces |
| 05/26/1981 | CA1101624A1 Method and installation for the continuous fabrication of cellular products of thermohardenable resin |
| 05/20/1981 | EP0028956A1 Continuous manufacture of phenolic resin foam sheets |
| 05/20/1981 | EP0028718A2 Mold equipment |
| 05/19/1981 | US4268571 Foam-containing structures |
| 05/19/1981 | US4268557 Process and mold for producing padded seat backs, and the product obtained |
| 05/19/1981 | US4267927 Article of manufacture comprising protective packaging for packageable objects of a fragile or perishable nature |
| 05/19/1981 | CA1101345A2 Method and apparatus for applying foam insulation to pipe |
| 05/13/1981 | EP0028441A1 Foam extrusion apparatus and method |
| 05/12/1981 | US4267135 Process and apparatus for the continuous molding of polymer foam bunstock having a substantially rectangular cross-section |
| 05/12/1981 | US4267134 Method and apparatus for smoothing foamed plastic core panelboard surface |
| 05/12/1981 | US4266928 Filling device for introducing pre-foamed post-expandable thermoplastics into molds for the production of moldings |
| 05/12/1981 | CA1100740A1 Method and device for the manufacture of composite forms for metallic window and door frames comprising a thermal barrier |
| 05/05/1981 | US4265608 Endless belt molding apparatus |
| 04/29/1981 | EP0027477A1 Process and device for the manufacture of hollow-block bricks with plastics filling |
| 04/28/1981 | US4264673 Oriented cell polyisocyanurate foam laminate |
| 04/28/1981 | US4264672 Polyolefins used as packaging material |
| 04/28/1981 | US4264544 Method of molding a rigid integral skin foamed resin product in a mold having a vented lid |
| 04/28/1981 | US4264390 Method and apparatus for making pipe sections in materials |
| 04/28/1981 | US4264291 Equipment for the continuous production of foam boards |
| 04/28/1981 | CA1099873A1 Apparatus and process for continuously producing foamed sheets |
| 04/22/1981 | EP0027338A1 Cloth molding process |
| 04/21/1981 | US4263247 Resin-foam laminate |
| 04/14/1981 | US4261939 Method and an arrangement for the manufacture of a material web of foamed thermoplastics |
| 04/14/1981 | US4261776 Method of making self-inflating air mattress |
| 04/14/1981 | US4261567 Hand grip |
| 04/14/1981 | CA1099450A1 Centrifugal process for production of polyurethane foam |
| 04/08/1981 | EP0026554A1 Process for producing foamed articles of an aromatic polyester |
| 04/07/1981 | US4260575 Method for molding ear cushions |
| 04/07/1981 | US4260571 Polystyrene |
| 04/07/1981 | US4260570 Method and apparatus for making a vaginal cleaning device |
| 04/07/1981 | US4260569 Method of making a foamed polystyrene building panel |
| 04/07/1981 | US4260355 Device for the discontinuous production of block foam |
| 04/07/1981 | US4260353 Apparatus for producing rectangular blocks of foamed resins |
| 04/07/1981 | US4260351 Apparatus for producing foamed plastic insulated wires |